Where can be m-15 grade concrete used?

M-15 grade concrete, which has a compressive strength of 15 MPa, is typically used for non-structural applications. It is suitable for use in plain concrete works such as footing for small structures, floor slabs, and pavements in areas with low load-bearing requirements. Additionally, it is often employed in the construction of drains, culverts, and other minor structures where high strength is not critical. However, it is not recommended for load-bearing structures or locations subject to heavy loads.